3 random beeping noise whilst i was out driving, high pitched sound. was just slowing down coming up to a roundabout, any ideas why? sat nav was off. my partner had his seatbelt on in the passenger side and dont think i saw a seat belt warning light pop up

Hi Guys so my Capture 2014 model every so often gives off a double beep. I read a couple people saying it happens when the map is open, but after I closed the map it still happened. There are no warning lights or messages on the dashboard. Could someone please let me know if this is happening to...